CN114424861A - Multi-degree-of-freedom bracket of desk and desk - Google Patents
Multi-degree-of-freedom bracket of desk and desk Download PDFInfo
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- CN114424861A CN114424861A CN202111638451.4A CN202111638451A CN114424861A CN 114424861 A CN114424861 A CN 114424861A CN 202111638451 A CN202111638451 A CN 202111638451A CN 114424861 A CN114424861 A CN 114424861A
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- support
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- desk
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
- A47B13/02—Underframes
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B41/00—School desks or tables
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Abstract
本发明涉及教学设备技术领域，尤其是一种课桌多自由度支架及课桌，课桌多自由度支架包括具有与地面连接的固定端以及与桌面连接的连接端的旋转支架；其中，所述桌面的长度方向具有与所述旋转支架连接的旋转近端和相对于所述旋转近端设置的旋转远端；其中，所述固定端和所述连接端之间转动连接；其中，所述连接端和桌面的旋转近端之间采用第一转轴和第一轴座转动连接；且，所述第一转轴的轴线与地面水平；还包括支撑支架，所述支撑支架连接于桌面的旋转远端和旋转近端之间。在需要改变上课的方式时只需将桌面的旋转远端抬起，使支撑支架远离地面，然后转动桌面，转动时不会产生噪音，可以快速的改变课桌的布置方式。
The invention relates to the technical field of teaching equipment, in particular to a desk multi-degree-of-freedom bracket and a desk. The desk multi-degree-of-freedom bracket includes a rotating bracket having a fixed end connected to the ground and a connection end connected to the desktop; wherein, the The length direction of the desktop has a rotating proximal end connected with the rotating bracket and a rotating distal end arranged relative to the rotating proximal end; wherein, the fixed end and the connecting end are rotatably connected; wherein, the connection The end and the rotating proximal end of the desktop are rotatably connected by a first rotating shaft and a first axle seat; and the axis of the first rotating shaft is horizontal to the ground; it also includes a support bracket, which is connected to the rotating distal end of the desktop and the proximal end of rotation. When you need to change the way of class, you only need to lift the rotating far end of the desktop to keep the support bracket away from the ground, and then rotate the desktop. There will be no noise when rotating, and the arrangement of the desk can be quickly changed.
Description
Technical Field
The invention relates to the technical field of desk teaching application, in particular to a desk multi-degree-of-freedom support and a desk.
Background
The diversified classroom is a teaching mode different from the traditional classroom in recent years, aims to arouse the enthusiasm of student in classroom participation, and is different from the traditional teaching mode in teaching content and the traditional teaching mode in teaching form. For example, after the teacher teaches the content, the students in class are divided into several groups, and the contents are consolidated by group discussion sharing, or the students in the whole class are discussed together.
The existing desk and chair equipment in a classroom is mostly arranged towards the direction of a platform, all students face the platform in class, and some desk and chair equipment arranged aiming at group discussion can discuss face to face around a group of desks between members in the same group, the sight directions of the students can not be unified, some desks are directly fixed on the ground of the classroom, and some desks are not fixed with the ground and can be moved.
Diversified classes are not limited to a certain independent class mode on a class, teacher lectures, group discussions and whole class discussions can be switched back and forth on one section, the traditional desk cannot meet the use requirement when meeting the switching of the class situation, the desk fixed on the ground of the class cannot be moved, more class time can be consumed when the desk which is not fixed on the ground is frequently moved, and the emitted noise can influence the normal teaching of other classrooms.
Disclosure of Invention
In order to solve the problems, the invention adopts the technical scheme that:
a multi-degree-of-freedom bracket for a desk comprises:
a rotating bracket having a fixed end and a connecting end;
the fixed end is connected with the ground, the connecting end is provided with a connecting plane and is connected with the desktop through the connecting plane;
wherein the connection plane has a proximal end of rotation proximate the rotational support and a distal end of rotation disposed opposite the proximal end of rotation;
the fixed end is rotatably connected with the connecting end;
the connecting end and the rotating near end are rotationally connected through a first rotating shaft and a first shaft base; and the number of the first and second electrodes,
the axis of the first rotating shaft is horizontal to the ground;
the support bracket is positioned at the rotating far end of the connecting plane and is also provided with a contact surface contacted with the ground; and the number of the first and second electrodes,
when the rotating support and the supporting support are perpendicular to a connecting plane, the distance from the contact surface of the fixed end of the rotating support and the ground to the connecting plane is equal to the distance from the contact surface of the supporting support and the ground to the connecting plane.
Furthermore, the support bracket is rotatably connected with the connecting plane through a second rotating shaft and a second shaft seat; and the axis of the second rotating shaft is parallel to the axis of the first rotating shaft.
Furthermore, the desk multi-degree-of-freedom support further comprises a linkage mechanism, the linkage mechanism comprises a linkage rod and a control rod, one end of the control rod is fixedly connected with one side, far away from the rotating near end of the support, of the connecting plane, the other end of the control rod extends towards one side provided with the rotating support, and a first sliding shaft is arranged at the other end of the control rod;
a rotating shaft hole is formed between two ends of the linkage rod, a third rotating shaft is fixedly arranged on the connecting end and penetrates through the rotating shaft hole, and the axis of the third rotating shaft is parallel to the axis of the first rotating shaft;
one end of the linkage rod is provided with a first sliding chute, and the first sliding shaft is arranged in the first sliding chute in a penetrating way and is in sliding fit with the first sliding chute;
the other end of the linkage rod is in sliding fit with the sliding shaft or the sliding groove on the supporting bracket through the sliding groove or the sliding shaft.
Furthermore, the other end of the linkage rod is provided with a second sliding chute, a second sliding shaft is arranged on the support bracket, the second sliding chute is connected with the second sliding shaft in a sliding manner, and the second sliding shaft is parallel to the axis of the second rotating shaft; and the number of the first and second electrodes,
the axes of the second sliding shaft and the second rotating shaft are not overlapped in the length projection direction of the second support, and the axis of the second sliding shaft deviates to one side where the rotating support is arranged.
Furthermore, a third sliding shaft is arranged at the other end of the linkage rod, a third sliding groove is formed in the supporting bracket, the third sliding shaft is connected with the third sliding groove in a sliding mode, and the third sliding groove is formed in one side, close to the rotating bracket, of the supporting bracket; and the number of the first and second electrodes,
the third spout is the arc wall, the interior arc direction of arc wall is towards support holder one side, the third spout by support holder is close to connection plane one end and extends to keeping away from connection plane one end.
Furthermore, the connecting end of the rotating support is also provided with an offset support body, the offset support body extends towards one side far away from the supporting support, and the third rotating shaft is arranged at one end, far away from the supporting support, of the offset support body.
Further, the link is still including extending the connecting rod, extend the connecting rod set up in the link is kept away from the one end of stiff end, extend the connecting rod and extend to keeping away from the connection plane direction of the rotatory circumference of link, first pivot or first axle bed sets up extend the connecting rod and keep away from the one end of link.
Furthermore, the rotary connection position of the fixed end and the connecting end is respectively sleeved and connected with an inner ring and an outer ring of the bearing;
the bearing is at least two, and two bearings coaxial coupling, wherein, the bearing that is close to connection plane one side is thrust bearing.
Furthermore, the two groups of supporting brackets are arranged on the connecting plane, and the axes of the second rotating shafts respectively connected with the two groups of supporting brackets are collinear;
the two groups of support brackets are connected through a cross beam.
The application also provides a multi-degree-of-freedom desk, which comprises the multi-degree-of-freedom bracket and a desk, wherein the bottom surface of the desktop is connected with the connecting plane.
The invention has the beneficial effects that:
the utility model provides a desk multi freedom support, multi freedom support replaces traditional desk support to support the desktop of desk on ground, through rotatable coupling between runing rest and the ground, only need lift the rotatory distal end of desktop when the mode that needs to change to attend class, make the runing rest keep away from ground, then rotate the desktop, it is rotatory by runing rest self at the pivoted in-process, and do not have the contact between multi freedom support and the ground, can not produce the noise during the rotation, the arrangement mode of change desk that can be quick.
The application also provides a multi-degree-of-freedom desk, and the multi-degree-of-freedom desk capable of easily rotating provides hardware equipment support for teaching in diversified classes.
Drawings
FIG. 1 is a schematic structural diagram of a desk and a multi-degree-of-freedom bracket of the desk according to embodiment 1 of the invention;
FIG. 2 is a schematic view of another perspective structure of FIG. 1;
FIG. 3 is a schematic view of the rotation of the desktop according to the present invention;
FIG. 4 is a schematic diagram of a raised state of the desktop according to the present invention;
fig. 5 is a schematic view of a third chute arrangement in embodiment 5 of the invention;
FIG. 6 is a schematic diagram of the table top lifted in embodiment 5 of the present invention;
FIG. 7 is a schematic view showing the arrangement of the offset support in example 6 of the present invention;
FIG. 8 is a schematic diagram illustrating a lifted state of a desktop according to embodiment 6 of the present invention;
FIG. 9 is a schematic view showing an arrangement of extension links according to embodiment 7 of the present invention;
FIG. 10 is a schematic view of the table top lifted in embodiment 7 of the present invention;
FIG. 11 is a schematic view of a rotary stand according to the present invention;
FIG. 12 is a schematic view showing the mounting of a bearing in embodiment 8 of the present invention;
FIG. 13 is a schematic view of a multi-degree of freedom desk according to the present invention.
Reference numerals:
the device comprises a rotating bracket 10, a fixed end 11, a connecting end 12, a first rotating shaft 13, a first shaft seat 14, a third rotating shaft 15, an offset support body 16, an extension connecting rod 17 and a bearing 18;
the support bracket 20, the second rotating shaft 21, the second shaft seat 22, the second sliding shaft 23, the third sliding chute 24 and the cross beam 25;
a tabletop 30, a connecting plane 31, a proximal end 32 of rotation, a distal end 33 of rotation;
the device comprises a linkage mechanism 40, a control rod 41, a first sliding shaft 42, a linkage rod 43, a rotating shaft hole 44, a first sliding groove 45, a second sliding groove 46 and a third sliding shaft 47;
a platform 50 and a stool 60.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings and embodiments thereof.
Example 1
Referring to fig. 1 to 13, the present embodiment provides a desk multiple degrees of freedom support, including:
a rotating bracket 10, wherein the rotating bracket 10 is provided with a fixed end 11 and a connecting end 12;
wherein, the fixed end 11 is connected with the ground, the connecting end 12 has a connecting plane 31, and is connected with the table top 30 through the connecting plane 31;
it should be noted that the connection plane 31 described in the present application is used to define the position of the structure in the multi-degree-of-freedom bracket, and the connection plane 31 may be specifically a bottom plane of the table top 30 when the multi-degree-of-freedom bracket is connected to the bottom of the table top 30.
Wherein the connection plane 31 has a proximal end 32 of rotation near the rotating holder 10 and a distal end 33 of rotation arranged opposite to the proximal end 32 of rotation.
Wherein, the fixed end 11 is rotatably connected with the connecting end 12.
Preferably, the fixing end 11 has a fixing plate, a fixing hole is formed on the fixing plate, and a fixing bolt is inserted into the fixing hole to fix the rotating bracket 10 to the classroom floor.
The connecting end 12 and the rotating near end 32 are rotatably connected by a first rotating shaft 13 and a first shaft seat 14, the first rotating shaft 13 may be disposed at the connecting end 12 or the rotating near end 32 of the table top 30, and the corresponding first shaft seat 14 may be disposed at the rotating near end 32 of the table top 30 or the connecting end 12 to realize the rotation of the table top 30 relative to the connecting end 12.
The axis of the first rotating shaft 13 is horizontal to the ground, so that the rotation surface of the table top 30 realized by the first rotating shaft 13 is vertical to the ground.
The device also comprises a support bracket 20, wherein the support bracket 20 is positioned at the rotating far end 33 of the connecting plane 31, and the support bracket 20 is also provided with a contact surface which is in contact with the ground; and the number of the first and second electrodes,
when the rotating bracket 10 and the supporting bracket 20 are perpendicular to the connecting plane 31, the distance from the contact surface of the fixed end 11 of the rotating bracket 10 and the ground to the connecting plane 31 is equal to the distance from the contact surface of the supporting bracket 20 and the ground to the connecting plane 31.
When the traditional desk is moved, a great deal of time is consumed when the arrangement mode of the desk is changed, noise is generated, the normal class attendance of other classrooms is influenced, and the implementation of diversified classes is limited by the traditional desk when the lecture mode needs to be changed.
The multi-degree-of-freedom bracket of the desk is connected between the ground and the desktop 30 of the desk, when the setting position of the desk needs to be adjusted, the desktop 30 can rotate and rotate around a central point, so that the position of the desktop 30 is changed, the requirement of a class-giving mode is met, hardware equipment support of diversified classes is provided, and more class-giving scene modes can be met when a plurality of desks are combined.
It should be noted that the distal end 33 and the proximal end 32 of the tabletop 30 are determined according to the center of rotation of the tabletop 30, and the center of rotation of the tabletop 30 is the proximal end 32. The pivoting proximal end 32 may be optionally located at one end of the length of the tabletop 30, as shown in fig. 1, but may alternatively be located at other positions along the length of the tabletop 30 to accommodate the requirements of the class mode.
When the arrangement position of the desk is required to be changed in a classroom, the rotating far end 33 of the desktop 30 is lifted upwards, the first shaft seat 14 and the first rotating shaft 13 rotate relatively, and the supporting bracket 20 arranged between the rotating far end 33 and the rotating near end 32 of the desktop 30 is contacted with one end of the ground and lifted, so that the supporting bracket is far away from the ground. At this time, only the rotating bracket 10 of the multi-degree-of-freedom bracket contacts with the ground, and then the desktop 30 is rotated in the horizontal direction to drive the fixed end 11 and the connecting end 12 of the rotating bracket 10 to rotate relatively, so as to change the arrangement position of the desktop 30, as shown in fig. 3 and 4, when the rotating bracket rotates to a required position, the desktop 30 is put down, so that the supporting bracket 20 contacts with the ground, and the adjustment of the desk position is completed.
The support bracket 20 and the rotation bracket 10 constitute at least two contact points with the ground, and limit the degree of freedom of the table top 30 and support the table top 30 when the support bracket 20 is put down.
Example 2
The present embodiment is proposed on the basis of embodiment 1, and referring to fig. 1, fig. 2, and fig. 4, further, the support bracket 20 is rotatably connected to the connection plane 31 through the second rotating shaft 21 and the second shaft seat 22; and, the axis of the second rotating shaft 21 is parallel to the axis of the first rotating shaft 13. The second shaft 21 may be disposed on the supporting bracket 20 or the table top 30, and the corresponding second shaft seat 22 may be disposed on the table top 30 or the supporting bracket 20 to realize the rotation of the table top 30 relative to the connecting end 12.
As shown in the desk layout of FIG. 13, a plurality of chairs or stools 60 are placed on both sides of the desk for students to use face to face during discussion; the distance between the rotating bracket 10 and the supporting bracket 20 in the length direction of the tabletop 30 is as far as possible, and the supporting bracket 20 too close to the rotating proximal end 32 does not support the rotating distal end 33 of the tabletop 30, so that the rotating distal end 33 is easily deformed after long-term use. If the support frame 20 is closer to the rotating distal end 33 than the support frame 20, the support frame 20 perpendicular to the tabletop 30 extends toward the rotating distal end 33 when the tabletop 30 is lifted, and the support frame 20 interferes with the chair or stool 60 when the tabletop 30 is horizontally rotated.
The supporting frame 20 connecting the second shaft 21 and the second shaft seat 22 to the table top 30 always remains downward after the table top 30 is lifted, and does not extend to the end of the rotating distal end 33, so as to reduce the interference range with the chair or stool 60 during rotation. The support bracket 20 can now be moved toward the proximal end 32 to increase support to the distal end 33 and to allow the support bracket 20 to rotate through the gap between the chairs or stools 60.
Example 3
The present embodiment is proposed on the basis of embodiment 2, referring to fig. 2 and 4, further, the desk multi-degree-of-freedom bracket further includes a linkage mechanism 40, the linkage mechanism 40 includes a linkage rod 43 and a control rod 41, one end of the control rod 41 is fixedly connected to the side of the connection plane 31 far away from the rotation near end 32 of the support bracket 20, the other end of the control rod 41 extends to the side where the rotation bracket 10 is disposed, and the other end of the control rod 41 is provided with a first sliding shaft 42;
a rotating shaft hole 44 is formed between the two ends of the linkage rod 43, a third rotating shaft 15 is fixedly arranged on the connecting end 12, the third rotating shaft 15 penetrates through the rotating shaft hole 44, the axis of the third rotating shaft 15 is parallel to the axis of the first rotating shaft 13, and the connecting end 12 drives the linkage mechanism 40 to rotate together when rotating relative to the fixed end 11, so that the control on the support bracket 20 is kept.
One end of the linkage rod 43 is provided with a first sliding chute 45, and the first sliding shaft 42 is arranged in the first sliding chute 45 in a penetrating way and is in sliding fit with the first sliding chute 45;
the other end of the linkage rod 43 is in sliding fit with a sliding shaft or a sliding groove on the support bracket 20 through the sliding groove or the sliding shaft.
The support bracket 20 and the tabletop 30 are rotatably connected, and the support bracket 20 always hangs down when the tabletop 30 is lifted, so that the arrangement interval of the chair or stool 60 is required by the way that the support bracket 20 rotates and passes through the interval of the chair or stool 60, and the arrangement of the chair or stool 60 along the length direction of the tabletop 30 is limited.
In this embodiment, the linkage mechanism 40 links the tabletop 30, the rotating frame 10, and the supporting frame 20, so that the supporting frame 20 can rotate to one side of the rotating frame while the tabletop 30 is lifted, thereby avoiding interference with the chair or stool 60 when the tabletop 30 is horizontally rotated, and not limiting the arrangement interval of the chair or stool 60, and when the tabletop 30 is rotated to a desired position, the tabletop 30 is lowered, and the rotating frame 10 is rotated to a contact position with the ground.
Specifically, when the table top 30 is lifted, the table top 30 rotates relative to the rotating bracket 10 through the first rotation, the control rod 41 fixedly connected with the table top 30 rotates along with the table top 30, the first sliding shaft 42 on the control rod 41 pushes the linkage rod 43 downwards, the linkage rod 43 can adapt to the rotation of the control rod 41 through the connection mode of the sliding groove and the sliding rod, the control rod 41 is driven to rotate, the middle part of the linkage rod 43 is rotatably connected with the connecting end 12 of the rotating bracket 10, and when one end provided with the first sliding groove 45 is pushed downwards, the other end of the linkage rod 43 is pried upwards. The linkage rod 43 and the support bracket 20 are matched with each other through a sliding groove and a sliding shaft, so that when the other end of the linkage rod 43 is pried upwards, the support bracket 20 is driven to rotate towards one end of the rotating bracket 10, the support bracket is folded, and the lower part of the second rotating shaft 21 cannot interfere with a chair or a stool 60 during rotation.
When the table top 30 is put down when the table top 30 is rotated to a required position, the control rod 41 pulls the linkage rod 43 upwards, one end of the linkage rod 43 close to the supporting bracket 20 pushes the supporting bracket 20 towards the direction vertical to the table top 30, and finally the supporting bracket 20 is contacted with the ground when the table top 30 is put flat.
Example 4
The embodiment is proposed on the basis of embodiment 3, referring to fig. 2 and fig. 4, further, the other end of the linkage rod 43 is a second sliding chute 46, the support bracket 20 is provided with a second sliding shaft 23, the second sliding chute 46 is connected with the second sliding shaft 23 in a sliding manner, and the second sliding shaft 23 is parallel to the axis of the second rotating shaft 21; and the number of the first and second electrodes,
the axes of the second slide shaft 23 and the second rotation shaft 21 do not coincide with each other in the longitudinal projection direction of the second bracket, and the axis of the second slide shaft 23 is offset to the side where the rotating bracket 10 is provided.
When the other end of the linkage rod 43 is pried upwards, the second sliding chute 46 rotates upwards to push the second sliding shaft 23 to the obliquely upper part close to the rotating bracket 10, so that the second sliding shaft 23 is forced to drive the supporting bracket 20 to rotate, and the supporting bracket 20 is folded.
The second sliding shaft 23 is offset toward the side where the rotating bracket 10 is provided, so that the force applied to the support bracket 20 by the second sliding chute 46 at the time of the initial rotation is deflected toward the side where the rotating bracket 10 is provided, not toward the axial direction of the second rotating shaft 21. The force applied to the support bracket 20 biased to one side of the rotating bracket 10 makes the initial rotation of the support bracket 20 less demanding, makes the lifting easier, and reduces the force to which the link mechanism 40 is subjected. The moving assembly, which is offset to one side of the rotating bracket 10, can also define the initial rotation direction of the support bracket 20.
Example 5
The present embodiment is proposed on the basis of embodiment 3, and referring to fig. 2 and 4, further, the other end of the linkage rod 43 is a third sliding shaft 47, the support bracket 20 is provided with a third sliding chute 24, the third sliding shaft 47 is connected with the third sliding chute 24 in a sliding manner, and the third sliding chute 24 is arranged on one side of the support bracket 20 close to the rotating bracket 10; and the number of the first and second electrodes,
the third sliding groove 24 is an arc-shaped groove, the inner arc direction of the arc-shaped groove faces one side of the supporting bracket 20, and the third sliding groove 24 extends from one end of the supporting bracket 20 close to the connecting plane 31 to one end of the supporting bracket far away from the connecting plane 31.
The third sliding groove 24 may be formed in a connecting plate, which is fixed to the support bracket 20.
When the table top 30 is lifted, the third sliding shaft 47 rotates to the obliquely upper side close to the rotating bracket 10 under the rotation of the linkage rod 43, and the supporting bracket 20 is driven to rotate to one side of the rotating bracket 10 through the cooperation with the third sliding groove 24.
The third sliding groove 24 is disposed at a side close to the rotating bracket 10 so that a force applied to the support bracket 20 by the third sliding shaft 47 at the initial time of rotation is deflected toward the side close to the rotating bracket 10 rather than toward the axial direction of the second rotating shaft 21. The force applied to the support bracket 20 biased to one side of the rotating bracket 10 makes the initial rotation of the support bracket 20 less demanding, makes the lifting easier, and reduces the force to which the link mechanism 40 is subjected. The moving assembly, which is offset to one side of the rotating bracket 10, can also define the initial rotation direction of the support bracket 20.
The third sliding chute 24 arranged in an arc shape gradually approaches the support bracket 20 in the arc-shaped third sliding chute 24 in the rotating process, and under the condition that the rotating speed of the third sliding chute 47 is not changed, the rotating speed of the support bracket 20 is faster along with the increase of the rotating angle, and the user initially starts to rotate the table top 30 from zero speed, so that the required initial force is larger, and at the moment, the contact point of the third sliding chute 47 and the third sliding chute 24 is farther from the support bracket 20, so that the force required for driving is small.
After the rotation, the third sliding shaft 47 gradually approaches the support bracket 20, the speed of the third rotating shaft 15 is unchanged during the approach process, the support bracket 20 accelerates the rotation to one side of the rotating bracket 10, the final rotating angle of the support bracket 20 is increased, and the effects of reducing the force required for lifting the tabletop 30 and increasing the final rotating angle are achieved.
Example 6
The present embodiment is proposed on the basis of embodiment 4, and referring to fig. 7 and 8, further, the connecting end 12 of the rotating bracket 10 is further provided with an offset support 16, the offset support 16 extends to a side away from the supporting bracket 20, and the third rotating shaft 15 is provided at an end of the offset support 16 away from the supporting bracket 20.
When the table top 30 is lifted up to enable the support bracket 20 to be folded towards one side of the rotating bracket 10, the larger the rotation angle of the support bracket 20 is, the better the obstacle avoidance effect after folding is, but a plurality of seats need to be arranged in the length direction of the table top 30, so that the table top 30 is longer, and the best obstacle avoidance angle of the support bracket 20 needs to be achieved by lifting the rotating far end 33 of the table top 30 to a higher angle, which increases the operation difficulty of an operator.
The rotating point of the linkage rod 43 is moved to the side where the control rod 41 is arranged by offsetting the support body 16, so that the rotating point of the linkage rod 43 is close to the contact point of the linkage rod 43 and the control rod 41, the distance between the contact point of the linkage rod 43 and the support bracket 20 and the rotating point of the linkage rod 43 is increased, when the rotating far end 33 of the desktop 30 is lifted, the rotating amplitude of the linkage rod 43 close to one end of the support bracket 20 is enlarged, a smaller angle for lifting the desktop 30 is realized, the support bracket 20 rotates by a larger angle, and the operation of changing the desk position by a user is facilitated.
Example 7
This embodiment is proposed on the basis of embodiment 4, and further, the connecting end 12 further includes an extending link 17, the extending link 17 is disposed at one end of the connecting end 12 away from the fixed end 11, the extending link 17 extends towards a connecting plane 31 away from the rotating circumferential direction of the connecting end 12, and the first rotating shaft 13 or the first axle seat 14 is disposed at one end of the extending link 17 away from the connecting end 12.
When the table top 30 is lifted up to enable the support bracket 20 to be folded towards one side of the rotating bracket 10, the larger the rotation angle of the support bracket 20 is, the better the obstacle avoidance effect after folding is, but a plurality of seats need to be arranged in the length direction of the table top 30, so that the table top 30 is longer, and the best obstacle avoidance angle of the support bracket 20 needs to be achieved by lifting the rotating far end 33 of the table top 30 to a higher angle, which increases the operation difficulty of an operator.
The arrangement of the deflection supporting body increases the distance between the rotation center of the desk top 30 and the rotating support 10 and the rotation center of the rotation of the rotating support 10, and also increases the distance between the control rod 41 and the rotation center of the desk top 30 and the rotating support 10, when the desk top 30 is lifted by the rotating far end 33, the rotation amplitude of the length direction of the desk top 30 close to one end of the control rod 41 is increased, meanwhile, the rotation amplitude of the control rod 41 is also increased, the rotation amplitude of the linkage rod 43 connected with the control rod 41 in a sliding manner is also increased, and finally, the smaller angle of the desk top 30 is lifted, and the supporting support 20 rotates by a larger angle, so that the operation of changing the position of the desk by a user is facilitated.
It should be noted that this embodiment can be implemented together with embodiment 6 to raise the smaller height of the table top 30 and increase the retraction angle of the support frame 20 toward the end of the rotating frame 10.
Example 8
The present embodiment is proposed on the basis of embodiment 1, and referring to fig. 11 and 12, further, the rotation connection positions of the fixed end 11 and the connecting end 12 are respectively sleeved and connected with the inner ring and the outer ring of the bearing 18;
the fixed end 11 and the connecting end 12 of the rotating bracket 10 can be rod-shaped and barrel-shaped respectively, and are sleeved on the inner ring and the outer ring of the bearing 18 respectively, and the bearing 18 is adopted to provide rotary connection support for the connecting end 12 and the fixed end 11.
The number of the bearings 18 is at least two, and the two bearings 18 are coaxially connected, wherein the bearing close to the connecting plane 31 is a thrust bearing.
The at least two bearings 18 are axially distributed in the rotating shaft, so that the limitation of at least two connecting points is provided for the rotation of the fixed bracket, and the damage of uneven stress on the connecting parts after long-time use is avoided.
The thrust bearing is used for bearing the gravity of the table top 30, and the service life of the bearing is prolonged.
Example 9
In this embodiment, based on embodiment 2, there are two sets of supporting brackets 20, and the two sets of supporting brackets 20 are disposed on two sides of the connecting plane 31, and the axes of the second rotating shafts 21 respectively connecting the two sets of supporting brackets 20 are collinear; the two groups of support brackets 20 are connected by a cross beam 25.
The two sets of supporting brackets 20 provide supporting force to the table top 30 in the width direction, so as to improve the stability of the table top 30 and prevent the table top 30 from shaking or deflecting in the width direction during use.
The cross beam 25 makes the two sets of support brackets 20 rotate synchronously and makes the two sets of support brackets 20 relatively fixed, so as to reduce the shaking of the table top 30.
In some embodiments, two sets of control rods 41 and linkage rods 43 of the linkage mechanism 40 may be provided to reduce the force on a single set of control rods 41 and linkage rods 43.
Example 10
The embodiment provides a multi-degree-of-freedom desk, which comprises the multi-degree-of-freedom bracket in the embodiments 1 to 9, and further comprises a desktop 30, wherein the bottom surface of the desktop 30 is connected with the connecting plane 31.
Fig. 13 shows an arrangement of the multi-degree-of-freedom desk provided in this embodiment, two rows of desks are symmetrically arranged, one platform 50 is arranged between the two rows of desks, and the rotation near end 32 of the desk is close to one side of the platform 50, in some lesson scenes, the desks 30 of the desks can be rotated to the horizontal direction for group discussion, and when a whole class discussion is needed, all the desks 30 can be rotated to the vertical direction, and then the chairs or stools 60 can be moved to one side of the desks, at this time, all students can conduct face-to-face discussion, and the teacher can give lessons on the middle platform 50.
Of course, the above is only one kind of arrangement scene of the desk, and the arrangement of the desk can be performed according to the specific scene when in use.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "inner", "outer", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for the purpose of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Where "inside" refers to an interior or enclosed area or space. "periphery" refers to an area around a particular component or a particular area.
In the description of the embodiments of the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the embodiments of the invention, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A desk multi freedom support is characterized by comprising:
a rotating bracket having a fixed end and a connecting end;
the fixed end is connected with the ground, the connecting end is provided with a connecting plane and is connected with the desktop through the connecting plane;
wherein the connection plane has a proximal end of rotation proximate the rotational support and a distal end of rotation disposed opposite the proximal end of rotation;
the fixed end is rotatably connected with the connecting end;
the connecting end and the rotating near end are rotationally connected through a first rotating shaft and a first shaft base; and the number of the first and second groups is,
the axis of the first rotating shaft is horizontal to the ground;
the support bracket is positioned at the rotating far end of the connecting plane and is also provided with a contact surface which is in contact with the ground; and the number of the first and second electrodes,
when the rotating support and the supporting support are perpendicular to a connecting plane, the distance from the contact surface of the fixed end of the rotating support and the ground to the connecting plane is equal to the distance from the contact surface of the supporting support and the ground to the connecting plane.
2. The desk multiple degree of freedom support of claim 1, characterized in that:
the supporting bracket is rotatably connected with the connecting plane through a second rotating shaft and a second shaft seat; and the axis of the second rotating shaft is parallel to the axis of the first rotating shaft.
3. The desk multiple degree of freedom support of claim 2, characterized in that:
the desk multi-degree-of-freedom support further comprises a linkage mechanism, the linkage mechanism comprises a linkage rod and a control rod, one end of the control rod is fixedly connected with one side, far away from the rotating near end of the support, of the connecting plane, the other end of the control rod extends towards one side provided with the rotating support, and a first sliding shaft is arranged at the other end of the control rod;
a rotating shaft hole is formed between two ends of the linkage rod, a third rotating shaft is fixedly arranged on the connecting end and penetrates through the rotating shaft hole, and the axis of the third rotating shaft is parallel to the axis of the first rotating shaft;
one end of the linkage rod is provided with a first sliding chute, and the first sliding shaft is arranged in the first sliding chute in a penetrating way and is in sliding fit with the first sliding chute;
the other end of the linkage rod is in sliding fit with the sliding shaft or the sliding groove on the supporting bracket through the sliding groove or the sliding shaft.
4. The desk multiple degree of freedom support of claim 3, characterized in that:
the other end of the linkage rod is provided with a second sliding chute, a second sliding shaft is arranged on the support bracket, the second sliding chute is connected with the second sliding shaft in a sliding manner, and the second sliding shaft is parallel to the axis of the second rotating shaft; and the number of the first and second electrodes,
the axes of the second sliding shaft and the second rotating shaft do not coincide in the length projection direction of the second support, and the axis of the second sliding shaft deviates to one side where the rotating support is arranged.
5. The desk multiple degree of freedom support of claim 3, characterized in that:
the other end of the linkage rod is provided with a third sliding shaft, a third sliding chute is arranged on the supporting bracket, the third sliding shaft is connected with the third sliding chute in a sliding manner, and the third sliding chute is arranged on one side, close to the rotating bracket, of the supporting bracket; and the number of the first and second electrodes,
the third spout is the arc wall, the interior arc direction of arc wall is towards support holder one side, the third spout by support holder is close to connection plane one end and extends to keeping away from connection plane one end.
6. The desk multiple degree of freedom support of claim 3, characterized in that:
the link of runing rest still is provided with the skew supporter, and the skew supporter extends to the one side of keeping away from the support holder, and the one end of support holder is kept away from at the skew supporter to the third pivot setting.
7. The desk multiple degree of freedom support of claim 3, characterized in that:
the link is still including extending the connecting rod, extend the connecting rod set up in the link is kept away from the one end of stiff end, extend the connecting rod and extend to keeping away from the connection plane direction of the rotatory circumference of link, first pivot or first pedestal sets up extend the connecting rod and keep away from the one end of link.
8. The desk multiple degree of freedom support of claim 1, characterized in that:
the rotary connection part of the fixed end and the connecting end is respectively sleeved and connected with an inner ring and an outer ring of the bearing;
the bearing is at least two, and two bearings coaxial coupling, wherein, the bearing that is close to connection plane one side is thrust bearing.
9. The desk multiple degree of freedom support of claim 2, characterized in that:
the two groups of supporting brackets are arranged on two sides of the connecting plane, and the axes of the second rotating shafts respectively connected with the two groups of supporting brackets are collinear;
the two groups of support brackets are connected through a cross beam.
10. A multi-degree-of-freedom desk comprising the desk multi-degree-of-freedom support as recited in any one of claims 1 to 9, further comprising a desktop, wherein a bottom surface of the desktop is connected to the connection plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638451.4A CN114424861B (en) | 2021-12-29 | 2021-12-29 | A desk multi-degree-of-freedom support and desk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638451.4A CN114424861B (en) | 2021-12-29 | 2021-12-29 | A desk multi-degree-of-freedom support and desk |
Publications (2)
| Publication Number | Publication Date |
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| CN114424861A true CN114424861A (en) | 2022-05-03 |
| CN114424861B CN114424861B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111638451.4A Active CN114424861B (en) | 2021-12-29 | 2021-12-29 | A desk multi-degree-of-freedom support and desk |
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| Publication number | Publication date |
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| CN114424861B (en) | 2023-03-14 |
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